AURAPEP. INDEPENDENTLY VERIFIED. RESEARCH-GRADE QUALITY.
AURAPEP. INDEPENDENTLY VERIFIED. RESEARCH-GRADE QUALITY.
GHK-Cu · 50MG
Lyophilized research-grade GHK-Cu (copper tripeptide-1). A tripeptide complex of glycyl-L-histidyl-L-lysine bound to Cu(II), first isolated from human plasma in 1973 by Pickart. Third-party verified at ≥99% HPLC purity. Single-batch traceable from synthesis to delivery.
ISO 9001 source facility. Cold-chain shipped. Batch-matched COA included with every order.
COMPOUND DETAILS
| Molecular formula | C₁₄H₂₄CuN₆O₄ |
| Molecular weight | 403.9 Da |
| Sequence | Gly-His-Lys (Cu²⁺) |
| CAS number | 49557-75-7 |
| PubChem CID | 378611 |
EVERY ORDER INCLUDES: PEPTIDE VIAL + PRINTED COA + COLD-PACK INSERT + TRACKED SHIPPING
DUTIES AND TAXES INCLUDED
Every lot is analyzed by an independent third-party laboratory before release. Each batch-matched Certificate of Analysis (COA) documents:
- HPLC purity: Reverse-phase high-performance liquid chromatography confirms purity at ≥99%. A representative chromatogram is included on each COA.
- Mass spectrometry: ESI-MS confirms molecular identity against the expected molecular weight of 403.9 Da.
- Copper chelation verification: ICP-MS or comparable metal analysis confirms the 1:1 Cu(II):peptide stoichiometry characteristic of the GHK-Cu complex. Copper stoichiometry is critical to the compound's biochemical identity.
- Sequence verification: The Gly-His-Lys sequence is confirmed against the published reference.
- Appearance: Blue lyophilized powder (color derives from the copper-peptide complex).
- Water content: Karl Fischer titration, reported per lot.
- Endotoxin level: LAL assay, reported per lot.
Every shipment includes the printed COA for the specific lot you receive. You can view the current batch COA via the link on this page.
For research use only. Not for human or veterinary use. Not a drug, food, cosmetic, or dietary supplement.
Lyophilized (as shipped):
- Stable at room temperature for short periods during transit.
- For long-term storage, keep desiccated at –20°C or below, protected from light. Shelf life: 24 months from date of synthesis when stored as directed.
Reconstituted:
- After reconstitution in sterile water, store at 2–8°C (refrigerated) and use within 2–7 days.
- For longer storage after reconstitution, aliquot and freeze below –18°C. Avoid repeated freeze-thaw cycles.
- GHK-Cu copper chelation dynamics are sensitive to solution pH, temperature, and extended aqueous exposure. These factors may affect complex integrity through copper dissociation or peptide degradation. Prepare working solutions close to the time of use.
Physical characteristics:
- Lyophilized form: blue powder (color from the Cu(II)-peptide complex).
- Soluble in sterile water.
For research use only. Storage guidance is derived from published peptide chemistry literature and is provided for laboratory handling purposes.
- Transit time: 2–4 business days with tracked delivery.
- Cold-pack insert: Every order ships with a cold-pack insert to buffer against temperature excursions during transit. Lyophilized peptides are stable at ambient temperature for short periods; the cold pack is an additional margin of safety.
- Tracking: Tracking number provided at dispatch.
- Duties and taxes: Included in the listed price for standard destinations.
- Replacement coverage: If your order arrives damaged, delayed beyond the stated window, or with compromised packaging, contact us within 7 days of delivery for a replacement at no cost.
- Shipping restrictions: We do not ship to jurisdictions where the sale of research peptides is restricted. If you are uncertain whether your jurisdiction permits import, consult local regulations before ordering.
Is this product for human use?
No. GHK-Cu is sold strictly for in-vitro and preclinical research use. It is not a drug, food, cosmetic, or dietary supplement. It is not approved for human or veterinary use. Purchase indicates agreement that the material will be used solely for laboratory research by qualified personnel.
What is the difference between GHK and GHK-Cu?
GHK is the free tripeptide glycyl-L-histidyl-L-lysine. GHK-Cu is the same peptide complexed with a Cu(II) ion in a 1:1 stoichiometry. The copper complex form is what researchers typically work with, because the native biological form of the molecule in human plasma is the copper-bound complex. The product supplied here is the GHK-Cu complex.
Why is the lyophilized powder blue?
The blue color is characteristic of the copper(II)-peptide complex. Cu(II) in coordination with the histidine imidazole nitrogen and other ligand sites in the peptide produces the characteristic color. A colorless powder would indicate a compromised or incomplete copper chelation and is not characteristic of research-grade GHK-Cu.
How is copper stoichiometry verified?
Copper content is verified by ICP-MS (inductively coupled plasma mass spectrometry) or equivalent metal analysis, confirming the 1:1 Cu(II):peptide ratio. This result is reported on the COA. Copper stoichiometry is a critical quality attribute for this compound — incorrect ratios produce different biochemical profiles and are not acceptable for reproducible research.
How do I access the Certificate of Analysis?
Each order ships with a printed COA for the exact lot you receive. You can also view the current batch COA as a PDF via the link on this page before ordering. COAs include HPLC purity, mass spectrometry confirmation, copper stoichiometry, water content, and endotoxin testing results.
What are the shipping restrictions?
We ship to jurisdictions where the sale of research peptides is permitted. We do not ship to regions where possession or import of these compounds is restricted. If you are uncertain about your local regulations, please consult them before ordering.